No one really actually thinks that the world is going to end today.
(Okay, perhaps a few crazy people, but no one worth mentioning)
The way I see it, if you always say the predictions of the apocalypse are false, then you'll probably be right. And in the event that you are wrong, an the world does end, nobody will be there to tell you "I told you so!".
But I do enjoy a good bit of sarcastic apocalyptic jokes.
Brandon Fields (A.K.A. DarthVincentPrice) has been posting all sorts of updates on how the apocalypse it happening, and he's even bothered to find some apocalyptic pictures of messed up stuff and saying it's what's left of the mall.
He's really done well with this opportunity, I expect he's been planning for a while.
What really annoys me is when some Christian guy goes off about how they've predicted the end, and it just makes the rest of us sensible people look ridiculous.

Also:

My favorite day of the year, so close.
It would be horrible if the world ended before it.